(949) 280-6220
About Granahan Construction
Granahan Construction - Soundproofing Southern California since 1999. One room, one business, one recording studio at a time. Granahan Construction provides excellent soundproofing solutions for homes, condos, recording studios, churches, restaurants, and more. No matter the space, we can soundproof it.
John Granahan
Owner & Founder
John Granahan's journey in construction began at a young age when his mother received a $10,000 quote for a roof repair—a cost their family couldn’t afford. Determined to find a solution, he took it upon himself to learn the trade, developing the hands-on skills and problem-solving mindset that would shape his career.
Over the years, his passion for craftsmanship and commitment to quality led him to specialize in soundproofing and construction management, founding Granahan Construction in 1988.
Today, with over 37 years of experience, John is a trusted expert in noise control solutions, offering consulting services that range from DIY guidance to legal expertise. His mission remains the same—providing honest, high-quality solutions that make construction and soundproofing accessible to everyone.
Our Soundproofing Guarantee
Granahan Construction is committed to delivering exceptional soundproofing solutions tailored to your needs. Our passion for soundproofing excellence drives us to provide unparalleled quality and customer satisfaction. We take pride in our craftsmanship and strive to exceed industry standards in every soundproofing project we undertake.